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From David Taylor Fish to Gardeners’ Chronicle   8 May 1869

Summary

Discusses CD’s paper ‘Formation of mould’ and CD’s views on earthworms.

Author:  David Taylor Fish
Addressee:  Gardeners’ Chronicle
Date:  8 May 1869
Classmark:  Gardeners’ Chronicle and Agricultural Gazette (1869): 501
Letter no:  DCP-LETT-6736F

Matches: 9 hits

  • … Discusses CD’s paper ‘Formation of mould’ and CD’s views on earthworms. …
  • … 1977. Earthworms : The formation of vegetable mould through the action of worms: with …
  • … their habits. By Charles Darwin. London: John Murray. 1881. ‘Formation of mould’: On the …
  • … formation of mould. [Read 1 November 1837. ] Transactions of the Geological Society of …
  • … issues. Fish refers to ‘Formation of mould’ . CD cited Fish’s article in Earthworms , p.   …
  • … Chronicle , 9 May [1869]. See ‘Formation of mould’ , p.  508 ( Collected papers 1: 52). …
  • … more properly called animal than vegetable mould. I, however, would accept the fact of the …
  • … persistency to cover the earth with vegetable mould without the assistance of manure. The …
  • … surface of the earth in the form of vegetable mould. And doubtless in this emptying of the …

From W. E. Darwin   3 December [1880]

Summary

Description of remains of a Roman villa and the worm activity at the site.

Author:  William Erasmus Darwin
Addressee:  Charles Robert Darwin
Date:  3 Dec [1880]
Classmark:  DAR 162: 111
Letter no:  DCP-LETT-12885

Matches: 15 hits

  • … often taken deep down into burrows & then may be reswallowed. ’ pencil 9.2 the … mould.   …
  • … 9.4] scored red crayon 9.2 mould and worm holes, 9.3] underl pencil and red crayon 9.4  …
  • … since the Romans; I tried the depth of mould in two places about 4 yards from each other, …
  • … 5 feet deep] double underl blue crayon 2.5 mould … a hard] underl blue crayon 3.3 tops … …
  • … think it is over 5 feet deep in parts. The mould rests on a hard deep red compact sand, so …
  • … spot of 15 inches in dept, and he said there was pure mould to within about 4 or 5 inches …
  • … to top of walls, & then there was mixed mould and stones mortar and loose rubbish from the …
  • … to be loose rubbish on top of them, but the mould on top did not appear to be so pure. Not …
  • … saw by holes that had been dug that the mould was of a considerable depth therefore though …
  • … all the castings I saw looked like pure mould. The proprietor of the part I was able to …
  • … lumps of mortar; the interstices were full of mould and worm holes, and here & there was a …
  • … mortar had to some extent been replaced by mould. Unfortunately I had no chance of seeing …
  • … the castings appeared all to be of pure mould, and as the floors has so fairly kept their …
  • … that the worms might be continually bringing up mould through the pavement, and that any …
  • … by worms working from outside, so that the mould would rise on the pavement without much …

‘Formation of mould’: On the formation of mould. [Read 1 November 1837.] Transactions of the Geological Society of London 2d ser. 5 (1840): 505–9. [Shorter publications, pp. 124–7.]

Matches: 2 hits

  • … Formation of mould’: On the …
  • … formation of mould. [Read 1 November 1837. ] Transactions of the Geological Society of …

Vegetable mould and worms: The formation of vegetable mould, through the action of worms, with observations on their habits. By Charles Darwin. London: John Murray. 1881.

Matches: 2 hits

  • … Vegetable mould and worms : The …
  • … formation of vegetable mould, through the action of worms, with observations on their …

To J. H. Gilbert   5 February 1881

Summary

Asks whether vegetable mould has an acid reaction. The contents of intestines of earthworms and castings are acid, which leads him to inquire about mould.

Author:  Charles Robert Darwin
Addressee:  Joseph Henry Gilbert
Date:  5 Feb 1881
Classmark:  Rothamsted Research (GIL13)
Letter no:  DCP-LETT-13038

Matches: 6 hits

  • … Asks whether vegetable mould has an acid reaction. The contents of …
  • … intestines of earthworms and castings are acid, which leads him to inquire about mould. …
  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … with a question. It is, whether vegetable mould, such as occurs close beneath the roots of …
  • … well drained place on my Lawn, where the mould was distinctly acid. — I ask because I have …
  • … chalk) & this leads me to wish to know about mould. I have read that the humus acids, (to …

From L. C. Wedgwood   [8 February 1872]

Summary

Describes earthworm experiments. She has measured depth of mould in various locales, e.g., on ridges and furrows of an old ploughed field.

Author:  Lucy Caroline Wedgwood; Lucy Caroline Harrison
Addressee:  Charles Robert Darwin
Date:  [8 Feb 1872]
Classmark:  DAR 63: 79–80
Letter no:  DCP-LETT-8203

Matches: 7 hits

  • … experiments. She has measured depth of mould in various locales, e.g. , on ridges and …
  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … this little washed away? ’ added ink 7.1 Worm mould on common] ‘space almost level’ interl …
  • … slope in garden and at bottom. (Feb 6 th . ) Top worm-mould 4 inches Bottom—— 5 3 4 Ex …
  • … pt . 4 Worm mould on common near sq re .  yard 3–4 in. On terrace near sq y d . 3 3 4 6.1  …
  • … field on slope. Jan.  11 th . Line of worm-mould very ill-defined— No apparent difference …
  • … straight line I think to preclude chance worm-mould 2 3 4 —4 inches No 2 (furrow) —  — 3 1 …

From J. V. Carus   6 December 1881

Summary

Lists errata in Earthworms, which he is translating.

Author:  Julius Victor Carus
Addressee:  Charles Robert Darwin
Date:  6 Dec 1881
Classmark:  DAR 161: 116
Letter no:  DCP-LETT-13533

Matches: 8 hits

  • … The word ‘mould’ in the …
  • … phrase ‘dark-coloured mould’ has not been changed to ‘humus’ in either of these printings. …
  • … Earthworms (1882): The formation of vegetable mould through the action of worms: with …
  • … ask you what difference you make between mould and humus ? In the most places you use both …
  • … l.6 you add (in the proof sheets), to the word “mould”, “ or humus ”, and on the very same …
  • … you insert (line 14), ‘humus’ instead of mould. This puzzles me. The translation will be …
  • … thousand), p. 103, and Earthworms (1882) , p. 105, the phrase ‘mould or humus’ is used. …
  • … 1882. Earthworms : The formation of vegetable mould through the action of worms: with …

From W. E. Darwin   [1 January 1872]

Summary

Worm action at Stonehenge.

Author:  William Erasmus Darwin
Addressee:  Charles Robert Darwin
Date:  [1 Jan 1872]
Classmark:  DAR 162: 105
Letter no:  DCP-LETT-8137

Matches: 10 hits

  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … altered from ‘of what? mould? —’]’ inserted after ‘bottom’ 15.2 filled … inches] scored …
  • … the shepherd … pipe.  12.8] ‘But why has more mould accumulated close to stone than at …
  • … distance of 8 yards   Did not block indent the mould? ’ added pencil 12.3 …
  • … 10 inches] underl red crayon 12.3 into the mould] ‘ …
  • mould’ underl red crayon 12.4 full of worms] underl red crayon 12.6 8 yards] underl red …
  • … bottom 13.3] ‘Is turf abruptly higher close to stones? ’ added pencil ; ‘of mould. ? — [ …
  • … trowel I found that this was sunk at the spot I examined 10 inches into the mould (it was …
  • … evidently worm mould v.  full of worms); the shepherd said the earth had probably been …
  • … inches to a foot, I found the depth of the mould above the mixed flint and chalk to be 5 1 …

From William Buckland to the Geological Society of London   9 March 1838

Summary

Recommends CD’s paper on "Formation of mould" [Collected papers 1: 49–53; read 1 Nov 1837] be printed in Transactions. Praises it as establishing a new "geological power".

Author:  William Buckland
Addressee:  Geological Society of London
Date:  9 Mar 1838
Classmark:  Geological Society of London (GSL/COM/P/4/2/47)
Letter no:  DCP-LETT-404

Matches: 6 hits

  • … Recommends CD’s paper on "Formation of mould" [ Collected papers 1: 49–53; read 1 Nov …
  • … vols. Chicago and London: University of Chicago Press. 1977. ‘Formation of mould’: On the …
  • … formation of mould. [Read 1 November 1837. ] Transactions of the Geological Society of …
  • … on M r Darwyns Paper on the formation of Mould. I consider the above paper & note appended …
  • … On the formation of mould’ , Collected papers 1: 49–53. CD had concluded the version of …
  • … of marine animals, in the same manner as mould has been prepared by the earth-worm on …

From Arthur Hall   5 December 1881

Summary

Vegetable mould covering paving-stones in Oxfordshire lanes accumulated over 14 or 16 centuries.

Author:  Arthur Hall
Addressee:  Charles Robert Darwin
Date:  5 Dec 1881
Classmark:  DAR 166: 88
Letter no:  DCP-LETT-13531

Matches: 4 hits

  • … Vegetable mould covering paving-stones in Oxfordshire lanes accumulated over 14 or 16 …
  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … Street | London S.E. Dec 5/81 “Vegetable Mould &c” Dear Sir Many of the minor Roman Roads …
  • … surface has thus become covered with mould in sufficient quantity to support abundant …

From A. C. Horner   23 December 1881

Summary

Detailed criticism of Earthworms.

Author:  Arthur Claypon Horner
Addressee:  Charles Robert Darwin
Date:  23 Dec 1881
Classmark:  DAR 166: 268
Letter no:  DCP-LETT-13578

Matches: 9 hits

  • … Earthworms (1882): The formation of vegetable mould through the action of worms: with …
  • … there ought to be both more and larger stones in the “mould” at the bottom than at …
  • … the top near the “superficial mould”, but the diagram does not represent it to be so. At …
  • … 1882. Earthworms : The formation of vegetable mould through the action of worms: with …
  • … its appearance as represented. The layer of vegetable mould is clearly defined. Beneath it …
  • … is a mass (25 1 2 inches thick) of “dark brown mould”. In the …
  • … the walls project into this “dark brown mould” on the north or upper side about half way ( …
  • … 12 inches or more) Now, if this state of “mould” had been brought about by long continued …
  • … to be incorrect, I should expect to find the “mould” gradually shelving off from the upper …

To T. H. Farrer   18 January 1881

Summary

Asks THF to obtain sample of chalk immediately below vegetable mould at Abinger.

Author:  Charles Robert Darwin
Addressee:  Thomas Henry Farrer, 1st baronet and 1st Baron Farrer
Date:  18 Jan 1881
Classmark:  Linnean Society of London (LS Ms 299/32)
Letter no:  DCP-LETT-13016

Matches: 4 hits

  • … Asks THF to obtain sample of chalk immediately below vegetable mould at Abinger. …
  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … fragments, immediately beneath the vegetable mould. I want to ascertain the percentage of …
  • … hear what the thickness of the vegetable mould is, measured from the upper surface, at the …

From J. G. Joyce   15 November 1877

Summary

Memorandum on Silchester. Report by IGJ of investigations carried out at Silchester with Frank and Horace [Darwin] on earthworm activity at the site of a Roman villa. Sections of vertical cuttings at Silchester, traced from the journal of the excavations of the Roman house, and notes on the same.

Author:  James Gerald Joyce
Addressee:  Charles Robert Darwin
Date:  15 Nov 1877
Classmark:  DAR 64.2: 63–6; DAR 65: 104, 106, 108
Letter no:  DCP-LETT-11236

Matches: 11 hits

  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … from the walls.  2 nd . The texture of the mould overlying walls & floors. General Aspect: …
  • … from 1.6″—to 1  f t . We examined the mould overlying this. The section was an excellent …
  • … lower was 24″ 1 2 deep. It is dark brown mould, very thickly interspersed with small sized …
  • … a much larger intermixture of pebbles & bits of tile in this mould than we expected. Above …
  • … this 24 1 2 ″ bed, is the surface mould in w h .  the grass grows. This is homogeneous, …
  • … was not white, nor light coloured—it was quite dark, & largely mixed with mould. This …
  • … was not its original condition, & the mould permeating it must be due to …
  • … the action of worms which carry mould with them into the very heart of the wall, when they …
  • … wall within. There was, even here, dark mould mixed in the mortar of the middle part, & …
  • … consequence. 24.2] scored pencil 23.5 it was … mould. ] underl red crayon 23.5 This was … …

To John Scott   15 January 1872

Summary

Is resuming the study of worm-casts as he believes they will bear on the denudation of land. Requests specific information on the relative number, size, and manner of deterioration of worm-casts in India.

Author:  Charles Robert Darwin
Addressee:  John Scott
Date:  15 Jan 1872
Classmark:  Transactions of the Hawick Archæological Society (1908): 68
Letter no:  DCP-LETT-8159F

Matches: 4 hits

  • … CD refers to ‘Formation of mould’ , which was read before the Geological Society of London …
  • … 1985–. Earthworms : The formation of vegetable mould through the action of worms: with …
  • … their habits. By Charles Darwin. London: John Murray. 1881. ‘Formation of mould’: On the …
  • … formation of mould. [Read 1 November 1837. ] Transactions of the Geological Society of …

To William Lonsdale   [c. June 1838]

Summary

Responds to report of the referee [on his paper "The formation of mould"]. Strikes out a paragraph and wants to add a note. Asks WL’s advice about a sentence.

Author:  Charles Robert Darwin
Addressee:  William Lonsdale
Date:  [c. June 1838]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-417

Matches: 4 hits

  • … referee [on his paper "The formation of mould"]. Strikes out a paragraph and wants to add …
  • … vols. Chicago and London: University of Chicago Press. 1977. ‘Formation of mould’: On the …
  • … formation of mould. [Read 1 November 1837. ] Transactions of the Geological Society of …
  • … CD’s paper ‘On the formation of mould’ , Collected papers 1: 49–53. On the deleted …

From J. P. Taylor   14 November 1881

Summary

Thinks CD overestimates earthworms’ role in creating mould. Gives some observations on worms and questions about their breeding habits.

Author:  John Pitt Taylor
Addressee:  Charles Robert Darwin
Date:  14 Nov 1881
Classmark:  DAR 178: 55
Letter no:  DCP-LETT-13483

Matches: 4 hits

  • … CD overestimates earthworms’ role in creating mould. Gives some observations on worms and …
  • … Earthworms (1882): The formation of vegetable mould through the action of worms: with …
  • … 1882. Earthworms : The formation of vegetable mould through the action of worms: with …
  • … that in accounting for the formation of mould you have scarcely made sufficient allowance …

From W. E. Darwin   31 December [1880]

Summary

Sends diagrams [missing] showing worm action at two sites.

Author:  William Erasmus Darwin
Addressee:  Charles Robert Darwin
Date:  31 Dec [1880]
Classmark:  DAR 162: 88
Letter no:  DCP-LETT-12957

Matches: 5 hits

  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … you might have a constant thickness of mould in any place continuing the same for …
  • … and that in case of slopes the thickness of mould diminishes with the angle of slope. I …
  • … of slope, and hardly worked at all where the mould was only just enough to support grass, …
  • … diagrams and notes on the thickness of mould in Teg Down and the Rifle valley in 1872; CD …

From A. R. Wallace   18 October 1881

thumbnail

Summary

Thanks for book [Earthworms]. Asks whether leaf-mould is not formed by decay as well as by the agency of worms.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  18 Oct 1881
Classmark:  DAR 106: B156–7
Letter no:  DCP-LETT-13413

Matches: 4 hits

  • … for book [ Earthworms ]. Asks whether leaf-mould is not formed by decay as well as by the …
  • … Earthworms : The formation of vegetable mould through the action of worms: with …
  • … not see that you refer to the formation of leaf-mould by the mere decay of leaves &c. In …
  • … it not take part in the formation of all mould? & also the decay of the roots of grasses & …

To Henry Johnson   23 December 1871

Summary

Is unable to accept invitation to Shrewsbury. Is grateful for offer of assistance at Wroxeter.

The weight of dry earth cast up by worms is 161/10 tons per acre annually.

Author:  Charles Robert Darwin
Addressee:  Henry Johnson
Date:  23 Dec 1871
Classmark:  Private collection
Letter no:  DCP-LETT-8118A

Matches: 4 hits

  • … 1985–. Earthworms : The formation of vegetable mould through the action of worms: with …
  • … their habits. By Charles Darwin. London: John Murray. 1881. ‘Formation of mould’: On the …
  • … formation of mould. [Read 1 November 1837. ] Transactions of the Geological Society of …
  • … Society of London , ‘Formation of mould’ . See also letter from L.  C.  Wedgwood, 20  …

From Henry Johnson   12 January [1872?]

Summary

Sends a map of a field showing the effect of earthworms.

Author:  Henry Johnson
Addressee:  Charles Robert Darwin
Date:  12 Jan [1872?]
Classmark:  DAR 168: 65
Letter no:  DCP-LETT-12419

Matches: 4 hits

  • … asked Johnson to observe the thickness of mould covering the Roman remains at Wroxeter, …
  • … whilst at the bottom of the same field the mould was deeper. The best way to decide the …
  • … the very top of the field B, & see if the mould always rests upon stony obstruction, or if …
  • … in your investigation of the subject of mould . I have great pleasure in doing it. My Son …
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Origin in Commentary
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Darwin in letters, 1869: Forward on all fronts

Summary

At the start of 1869, Darwin was hard at work making changes and additions for a fifth edition of  Origin. He may have resented the interruption to his work on sexual selection and human evolution, but he spent forty-six days on the task. Much of the…

Matches: 1 hits

  • … confirm the view expressed in his 1840 paper ‘Formation of mould’ of the astonishing role of …